Mercurial > sdl-ios-xcode
view docs/man3/SDL_SetGamma.3 @ 155:2d162219f433
Date: Thu, 16 Aug 2001 21:50:51 -0500 (EST)
From: Darrell Walisser <dwaliss1@purdue.edu>
Subject: Patch for video bugs + Max's additions
I've attached a patch for today's CVS that includes Max's virtual
mouse button fix as well as some other changes:
-building mode list correctly now (had duplicate entries, was unsorted)
-switching modes correctly now (wasn't destroying previous mode)
-releasing memory correctly in event loop
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Aug 2001 23:57:39 +0000 |
| parents | 55f1f1b3e27d |
| children | e5bc29de3f0a |
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.TH "SDL_SetGamma" "3" "Sun 10 Jun 2001, 19:42" "SDL" "SDL API Reference" .SH "NAME" SDL_SetGamma\- Sets the color gamma function for the display .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_SetGamma\fP\fR(\fBfloat redgamma, float greengamma, float bluegamma\fR); .SH "DESCRIPTION" .PP Sets the "gamma function" for the display of each color component\&. Gamma controls the brightness/contrast of colors displayed on the screen\&. A gamma value of 1\&.0 is identity (i\&.e\&., no adjustment is made)\&. .PP This function adjusts the gamma based on the "gamma function" parameter, you can directly specify lookup tables for gamma adjustment with \fISDL_SetGammaRamp\fR\&. .PP Not all display hardware is able to change gamma\&. .SH "RETURN VALUE" .PP Returns -1 on error (or if gamma adjustment is not supported)\&. .SH "SEE ALSO" .PP \fISDL_GetGammaRamp\fR \fISDL_SetGammaRamp\fR ...\" created by instant / docbook-to-man, Sun 10 Jun 2001, 19:42